Chiral doublet bands in odd-odd nuclei

摘要

The criteria for chiral doublet bands based on one particle and one hole coupled to a triaxial rotor have been summarized.Candidate chirai doublet bands in A ～ 100 and 130 odd-odd nuclei were checked against these chiral criteria.Two representative cases,nearly degenerate △I = 1 doublet bands in 126Cs and 106Rh were investigated in the two quasiparticles coupled with a triaxial rotor model.After including the pairing correlation,good agreement has been obtained between the calculated results and the data available,which supports the interpretation of observed doublet bands as chiral bands.